P
US4830693AExpiredUtilityPatentIndex 90

Method for forming a tire around a bead

Assignee: BRIDGESTONE CORPPriority: Nov 8, 1985Filed: Nov 7, 1986Granted: May 16, 1989
Est. expiryNov 8, 2005(expired)· nominal 20-yr term from priority
Inventors:OKAFUJI YUKITAKATAJIMA KUNIOSUMIUCHI MASAHARUADACHI MASAMITAKAHASHI SHOJI
B29D 2030/325B29D 30/32
90
PatentIndex Score
24
Cited by
7
References
1
Claims

Abstract

A method and apparatus for forming a tire in which an inner circumference of a tire carcass is wrapped around a tire bead by being grasped by an expanding air bladder against a stopper plate. The stopper plate, with the bladder still inflated is raised relative to the bead and main tire carcass and then moved into the annular portion of the tire carcass to encase the bead.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A method of forming a tire comprising in sequence, the steps of: pushing and spreading bending-over portions of a tire member wound on a tire forming drum by bladders to pinch the outer ends of said portions between said bladders and cylindrical bodies;   moving said bodies axially toward the middle part of said drum to bend over said portions around wire beads;   moving said bladders out from between said member and said bodies; and   reducing diameters of said bodies to hold the already bent-over tire member on the peripheral surface of said drum and axially moving said bodies to convey said member axially from said drum.

Cited by (0)

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References (0)

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